Roughing wheel



Jan. 30, 1945. J. F. SMITH RQUGHING WHEEL Filed Dec. 1, 1945 Patented Jan. 30, 1945 OFFICE ROUGHING 'WHE EL John F. Smith, Quincy, Mass., .assignor to Shoe Press Corporation, Philadelphia, Pa a .cor-.

porat'ion of Delaware Application December 1, 1943, Serial No. 512,463

,1 Claim. (01. .6,9-1);

Thisinvntion relates to roughing tools and more particularly to a roughing wheel for use on a shoe finishing machine shaft for the rough--. ing of shoe parts to provide a receptive surface for adhesive shoe cement.

As the conventional shoe finishing machine shaft is supported by bearings at each end thereof and any extensions of the shaft beyond the bearings are equipped with other tools, it is necessary to split additional tools so that they can be applied to the shaft without removal of the bearings and/or other tools mounted thereon.

Heretofore split roughing wheels have been made, however, they did not provide for alignment of the parts so that clamping screws could be rapidly inserted and attempts to provide aligning means resulted in structures comprising several sections'which are dilficult to assembl so that they run concentric or are apt to fly apart when rotated at the high speeds required for roughing leather or the like.

It is an obje'ctof this invention to provide a split roughing wheel having means for laterally aligning the segments while the wheel is being applied to a shoe finishing machine shaft.

Another object of the invention is to provide a roughing wheel comprising only two segments, that is of simple construction, relatively cheap to manufacture, and which will run concentric with its shaft. Other objects of the invention will in part be obvious and will in part appear hereinafter.

For a fuller understanding of the nature and objects of the invention reference should be had to the following detailed description taken in connection with the accompanying drawing,'in

which;

Fig. 1 is a side elevation of a shoe part roughing wheel embodying features of the invention;

Fig. 2 is a sectional view taken substantially along lines 2-2 of Fig. 1;

Fig. 3 is side view of the wheel partly in section and showing its application to the shaft of a shoe finishing machine, and

Fig. 4 is a view on a reduced scale similar to Fig. 2 but not in section and with the roughing strip removed.

The wheel comprises two similar semi circular segments shown in the drawing as upper and lower segments which may be moulded of any suitable metal or some of the present synthetic plastics. serve to make either of the members.

The two wheel segments each comprise the In any event a single mould would two annular shaft encircling extensions I2 and I3 separated by a central annular member. ll having larger internal and external diameters than the shaft encircling extensions I2 and I3.

To secure the wheel to the finishing machine shaft the extensions I 2 and I3'of the upper wheel segment are provided with screw threaded bores I5 and the extensions I2 and I3 of the lower wheel segment are provided with counterbored holes I6. Screws II threaded in the holes I6 serve to clamp the two wheel segments to each other and to the shaft I8 of a shoe finishing machine.

The periphery of each central member I4 is provided with a groove 20 formed between the spaced circumferentially extending flanges 3| and which receives a roughing strap 2| of card cloth or the like.

The extensions I2 and I3 of each of the two wheel segments have the similar, upper and lower diametrically extending, flat faces 22, the upper face 22 of each extension contacting the corresponding lower face .22 thereof when the assembly is secured to the shaft I8. I

Each central member I4 has the flat faces 26 at the opposite sides thereof which extend the width of the groove 20 and which extend parallel to the faces 22 of the extensions I2 and I3, but instead of the corresponding faces of the members I4 contacting each other when the two wheel segments are secured to the shaft I8, they are spaced apart to form a slot at one side of the roughing wheel, into which slot the key 25 is fitted, and are spaced apart at the other side of the roughing wheel to form a slot which receives the inturned ends 30 of the roughing strap 2 I.

The ends 30 of the roughing strap are anchored by the pins 23 to the faces 26 of the central member I4.

The key 25 extends the width of the groove 20 and is secured to one face 26 of the central member I4 by the screw 24. The key through extending the width of the groove 20 contacts the flanges 3| and maintains the two wheel segments in alignment while they are being applied to the shaft I8 as illustrated by Fig. 3.

In applying the wheel to a shoe finishing mabers I0 and II are then closed and the'screws I! inserted to lock the members to the shaft. It can readily be seen that a wheel constructed in the manner described is easy and cheap to manufacture 'as the members I0 and II are identical except for the screw holes, and that as the shaft encircling extensions and roughing strap receiving portion are integral, and are keyed from lateral displacement, they will run concentric allowing work to be held against the roughing strap without vibration. 7

Since certain changes may be made in the above construction and difierent embodiments of the invention could be made without departing from.

circular member having larger inner and outer diameters than said extensions, said extensions and said central member of each of said segments being formed integrally, said central members having axially spaced circumferentially extending flanges forming therebetween an outer strap receiving groove, a roughing strap in said groove, said central members bein'g'spaced apart between said flanges at opposite sides of said wheel and forming diametrically oppositely disposed slots therebetween in alignment with said groove, said strap having inturned ends in one of said slots, and a key in the other of said slots attached toone of said central members andextending completely cross-wise said other of said slots and contacting said flanges whereby when said Wheel is being assembled on said shaft, the contact of said key with said flange maintains said segments in alignment.

H JOHN E. SMITH. 

